25 & 26. Dominik Richter & Thomas Griesel — HelloFresh cofounders

Recipe delivery services may be 10 a penny now, but back in 2011, no one had heard of the concept.

HelloFresh was a game-changer. It was started by Richter and Griesel, who shared the belief that everyone should have the opportunity to enjoy wholesome, home-made meals with no preparing, no shopping, and no hassle.

At the start, the duo spent their nights testing all the recipes themselves, and packaged and delivered the recipe boxes full of ingredients by hand. Now, HelloFresh delivers 65.6 million meals to over 2.48 million households in the US, the United Kingdom, Germany, the Netherlands, Belgium, Luxembourg, Australia, Austria, Switzerland, Canada, and New Zealand.

Read more: HelloFresh has launched special Mother's Day meal kits — I tried the boozy brunch box and was impressed by the quality of the food